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%\addcontentsline{toc}{chapter}{Acknowledgements}
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This dissertation is the culmination of research work/implementation which was
initiated in August 2011.

I would like to express my upmost gratitude to my 
supervisor Dr Mandar Chitre for his dedication and enthusiasm in
teaching and guiding me throughout the course of the project. 
His timily advice and
insights have helped me in carrying out this project successfully. 
I would like to also thank Dr. Soh Wee Seng for the kind assistance throughout
the course of the project.

I would like to also thank Mohan and Shankar for their valuable assitance.
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April- 2012\\
{National University of Singapore, Singapore}\\
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